Determining position of a node based on aged position data
    1.
    发明授权
    Determining position of a node based on aged position data 有权
    基于老化位置数据确定节点的位置

    公开(公告)号:US08150378B2

    公开(公告)日:2012-04-03

    申请号:US11965460

    申请日:2007-12-27

    CPC classification number: G01S5/0063 G01S19/45 H04W64/00

    Abstract: Techniques are provided for determining a position of a node. For example, the node receives first position data from a first reference node and second position data from a second reference node. The second position data includes second position measurement information and a precision indicator which indicates accuracy of the second position measurement information. The node generates a timestamp which indicates when the second position data was received by node, and storing the second position data and associated timestamp. Upon receiving updated first position data at the node from the first reference node, the node determines whether updated second position data has been received from the second reference node, and if not, generates aged second position data based on the stored second position data and the associated timestamp. The node can then determine its position based on the aged second position data and the updated first position data.

    Abstract translation: 提供了用于确定节点位置的技术。 例如,节点从第一参考节点接收第一位置数据和从第二参考节点接收第二位置数据。 第二位置数据包括第二位置测量信息和指示第二位置测量信息的精度的精度指示器。 节点生成时间戳,其指示节点何时接收到第二位置数据,并存储第二位置数据和关联的时间戳。 在从第一参考节点在节点处接收到更新的第一位置数据时,节点确定是否已经从第二参考节点接收到更新的第二位置数据,如果不是,则基于所存储的第二位置数据生成老化的第二位置数据, 关联时间戳。 然后,节点可以基于老化的第二位置数据和更新的第一位置数据来确定其位置。

    DETERMINING POSITION OF A NODE BASED ON AGED POSITION DATA
    2.
    发明申请
    DETERMINING POSITION OF A NODE BASED ON AGED POSITION DATA 有权
    确定基于老化位置数据的节点的位置

    公开(公告)号:US20090168674A1

    公开(公告)日:2009-07-02

    申请号:US11965460

    申请日:2007-12-27

    CPC classification number: G01S5/0063 G01S19/45 H04W64/00

    Abstract: Techniques are provided for determining a position of a node. For example, the node receives first position data from a first reference node and second position data from a second reference node. The second position data includes second position measurement information and a precision indicator which indicates accuracy of the second position measurement information. The node generates a timestamp which indicates when the second position data was received by node, and storing the second position data and associated timestamp. Upon receiving updated first position data at the node from the first reference node, the node determines whether updated second position data has been received from the second reference node, and if not, generates aged second position data based on the stored second position data and the associated timestamp. The node can then determine its position based on the aged second position data and the updated first position data.

    Abstract translation: 提供了用于确定节点位置的技术。 例如,节点从第一参考节点接收第一位置数据和从第二参考节点接收第二位置数据。 第二位置数据包括第二位置测量信息和指示第二位置测量信息的精度的精度指示器。 节点生成时间戳,其指示节点何时接收到第二位置数据,并存储第二位置数据和关联的时间戳。 在从第一参考节点在节点处接收到更新的第一位置数据时,节点确定是否已经从第二参考节点接收到更新的第二位置数据,如果不是,则基于所存储的第二位置数据生成老化的第二位置数据, 关联时间戳。 然后,节点可以基于老化的第二位置数据和更新的第一位置数据来确定其位置。

    Method and apparatus for link adaptation by stochastically selecting a transmit parameter
    3.
    发明授权
    Method and apparatus for link adaptation by stochastically selecting a transmit parameter 有权
    通过随机选择发送参数来进行链路自适应的方法和装置

    公开(公告)号:US08036168B2

    公开(公告)日:2011-10-11

    申请号:US12021599

    申请日:2008-01-29

    CPC classification number: H04L1/0019 H04L1/0003 H04L1/0009 H04W52/225

    Abstract: A method and apparatus for link adaptation is provided. A node stores a set of transmit parameters and corresponding selection probabilities for each of the transmit parameters. The node stochastically selects a particular transmit parameter based on the selection probabilities, and then transmits a packet according to the particular selected transmit parameter. From received transmission feedback information, the node derives performance statistics, and uses the performance statistics to specify an estimated performance function for the particular transmit parameter. The node updates a selection probability computation function (SPCF), and uses the SPCF to generate updated selection probabilities corresponding to each transmit parameter in the set of available transmit parameters.

    Abstract translation: 提供了一种用于链路自适应的方法和装置。 节点存储针对每个发射参数的一组发射参数和相应的选择概率。 节点根据选择概率随机选择特定的发射参数,然后根据特定的选择的发送参数发送分组。 从接收到的传输反馈信息中,节点导出性能统计信息,并使用性能统计信息来指定特定传输参数的估计性能函数。 节点更新选择概率计算功能(SPCF),并且使用SPCF来生成与可用发射参数的集合中的每个发射参数相对应的更新的选择概率。

    Determining position of a node and representing the position as a position probability space
    4.
    发明授权
    Determining position of a node and representing the position as a position probability space 有权
    确定节点的位置并将位置表示为位置概率空间

    公开(公告)号:US08643545B2

    公开(公告)日:2014-02-04

    申请号:US11965447

    申请日:2007-12-27

    CPC classification number: G01S5/0289 H04W64/00

    Abstract: Methods and apparatus are provided for determining and representing a location or position of a node in a network. When the node receives position measurement information from a reference node, the node generates, based on the position measurement information, a position probability space (PPS) which defines a space that encompasses possible positions where the node is possibly positioned in the network. The PPS includes a centroid (i.e., a set of coordinates), and a set of vectors which originate from the centroid and define the space around the centroid. The magnitude of each vector reflects the accuracy of the position in the direction of the vector.

    Abstract translation: 提供了用于确定和表示网络中的节点的位置或位置的方法和装置。 当节点从参考节点接收到位置测量信息时,节点基于位置测量信息产生一个定位空间的位置概率空间(PPS),该空间包含节点可能位于网络中的可能位置。 PPS包括质心(即,一组坐标)以及源自质心并定义质心周围的空间的一组向量。 每个向量的大小反映了矢量方向位置的精度。

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